CN101885107A - Nickel-hydrogen battery post welding method - Google Patents
Nickel-hydrogen battery post welding method Download PDFInfo
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- CN101885107A CN101885107A CN2009100688576A CN200910068857A CN101885107A CN 101885107 A CN101885107 A CN 101885107A CN 2009100688576 A CN2009100688576 A CN 2009100688576A CN 200910068857 A CN200910068857 A CN 200910068857A CN 101885107 A CN101885107 A CN 101885107A
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- welding
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Abstract
The invention relates to a nickel-hydrogen battery post welding method, which comprises the following steps of: (1) device preparation; (2) test sample demagnetization; (3) test sample welding; (4) post welding; and (5) finished product examination. The welding method adopts a vacuum electron beam welding process, namely, welding under vacuum, so a metal is not oxidized and nitrided; in addition, the metal is not filled during welding, so that the high-purity of a weld metal is guaranteed, and the post welding quality and the percent of pass are improved at the same time. Vacuum electron beam welding parameters adopted in the method can be regulated in a relatively wide range and are flexible in control, high in precision and suitability, the welding process automation and program control can be easily realized, the welding repeatability is high and the cost is saved.
Description
Technical field
The invention belongs to the high-voltage nickel-hydrogen battery technical field, relate to a kind of Ni-H cell pole welding method.
Background technology
The negative electrode active material of hydrogen-nickel battery is a hydrogen, and Hydrogen Vapor Pressure changes between 0～6.0MPa, and the charging back casing is exactly a high-pressure bottle, if housing seal is bad, the leakage of hydrogen can directly cause declining of battery capacity to be fallen.In addition, the welding of battery electrode column is again the important procedure that guarantees the battery container sealing, and laser or inferior arc welding are adopted in the welding of general high voltage force container pole, because the battery electrode column welding position is hidden, welding energy stability is not strong, and the welding quality of pole allows of no optimist.And vacuum electron beam welding heat-source energy density is big, fusion penetration good, weldering speed is fast, weld seam is dark and narrow, and the crackle and the leakage that easily produce in the time of can preventing the refractory metal welding improve the welding quality of pole greatly.
By retrieval, do not find high-voltage nickel-hydrogen battery technology for welding electrode pile patent.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part, the Ni-H cell pole welding method of a kind of welding quality height, good sealing effect is provided
The object of the present invention is achieved like this:
A kind of Ni-H cell pole welding method, it is characterized in that: the step of welding method is:
(1) equipment is prepared: vacuum electron beam welder is carried out the test running of water, electricity and gas inspection, lens inspection, energy test, workbench and anchor clamps;
(2) sample demagnetization: the battery cover identical with Ni-H cell specification, material to be welded cooperated with pole, and laser positioning is got ready, with demagnetizer sample is demagnetized, and is stained with the welding position of acetone wiping sample with nylon cloth.
(3) sample welding: the pole weld jig is ready to, Ni-H cell to be welded is installed on the pole weld jig, adjust the pole horizontal plane, find out the center of circle on pole plane, the fixing then and formal welding in welding back, location by operation interface with vernier height gauge;
(4) test check: extract battery container and carry out fatigue, burst pressure test, weld seam and dissect metallographic examination, measure weld penetration, weld penetration should satisfy 0.4mm～1.0mm requirement;
(5) pole welding: after welding parameter is determined to finish, carry out the welding of product pole according to definite good welding parameter;
(6) check finished product: check battery electrode column weld appearance, weld seam should be clean and tidy, is silvery white in color, and do not have obvious oxidation, do not have obviously to splash defectives such as pore-free, undercut, field trash, breakpoint.
And, when described sample and product demagnetization, use the magnetometer survey magnetic density less than 1 * 10
-4T.
Advantage of the present invention and good effect are:
This welding method adopts vacuum electron beam welding method, promptly welds in a vacuum, and metal can oxidation, nitrogenize, and generally do not fill metal during welding, and guaranteed the high-purity of weld metal, improved the pole welding quality, improved qualification rate simultaneously.Adopt the vacuum electron beam method welding parameter can regulated in wider range, control flexibly, precision is high, adaptability is strong, is easy to realize welding process automation and programme-control, the welding good reproducibility has been saved cost.
The specific embodiment
The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of Ni-H cell pole welding method, step is:
(1) equipment is prepared: carry out the preceding preparation of vacuum electron beam welder welding by the equipment regulation requirement, promptly carry out the test running of water, electricity and gas inspection, lens inspection, energy test, workbench and anchor clamps.
(2) sample demagnetization: the battery cover identical with Ni-H cell specification, material to be welded cooperated with pole, and laser positioning is got ready, with demagnetizer sample is demagnetized, and uses the magnetometer survey magnetic density, should be less than 1 * 10
-4T is stained with the welding position of acetone wiping sample with nylon cloth.
(3) sample welding: the pole weld jig is ready to, adjust anchor clamps to meeting product requirement, get cover Ni-H cell to be welded, be installed on the pole weld jig, adjust the pole horizontal plane with vernier height gauge, find out the center of circle on pole plane by operation interface, use desk lamp or flashlight strengthens light as the operation interface reflecting effect is undesirable in the operating process, fixing; Press equipment regulation and adjust welding parameter for locating welding parameter.After the welding of location, adjusting welding parameter by equipment regulation is formal welding parameter, checks after the sample welding that weld seam should not have puncture, if any puncture, adjusts welding parameter and carries out sample welding again.
(4) test check: extract battery container and carry out fatigue, burst pressure test, weld seam and dissect metallographic examination, tired and burst pressure should satisfy the corresponding techniques requirement, the measurement weld penetration; Weld penetration should satisfy 0.4mm～1.0mm requirement, when tired burst pressure, fusion penetration do not meet the demands, adjusts welding parameter, carries out sample welding again by equipment regulation, satisfies corresponding requirements to every technical indicator and ends.
(5) pole welding: after welding parameter is determined to finish, carry out the welding of product pole according to definite good welding parameter;
(6) check finished product: 100% range estimation (using magnifying glass in case of necessity) check battery electrode column weld appearance, weld seam should be clean and tidy, is silvery white in color, and do not have obvious oxidation, do not have obviously to splash defectives such as pore-free, undercut, field trash, breakpoint.
Claims (2)
1. Ni-H cell pole welding method, it is characterized in that: the step of welding method is:
(1) equipment is prepared: vacuum electron beam welder is carried out the test running of water, electricity and gas inspection, lens inspection, energy test, workbench and anchor clamps;
(2) sample demagnetization: the battery cover identical with Ni-H cell specification, material to be welded cooperated with pole, and laser positioning is got ready, with demagnetizer sample is demagnetized, and is stained with the welding position of acetone wiping sample with nylon cloth;
(3) sample welding: the pole weld jig is ready to, Ni-H cell to be welded is installed on the pole weld jig, adjust the pole horizontal plane, find out the center of circle on pole plane, the fixing then and formal welding in welding back, location by operation interface with vernier height gauge;
(4) test check: extract battery container and carry out fatigue, burst pressure test, weld seam and dissect metallographic examination, measure weld penetration, weld penetration should satisfy 0.4mm～1.0mm requirement;
(5) pole welding: after welding parameter is determined to finish, carry out the welding of product pole according to definite good welding parameter;
(6) check finished product: check battery electrode column weld appearance, weld seam should be clean and tidy, is silvery white in color, and do not have obvious oxidation, do not have obviously to splash defectives such as pore-free, undercut, field trash, breakpoint.
2. Ni-H cell pole welding method according to claim 1 is characterized in that: when described sample demagnetizes, use the magnetometer survey magnetic density less than 1 * 10
-4T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100688576A CN101885107B (en) | 2009-05-15 | 2009-05-15 | Nickel-hydrogen battery post welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100688576A CN101885107B (en) | 2009-05-15 | 2009-05-15 | Nickel-hydrogen battery post welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101885107A true CN101885107A (en) | 2010-11-17 |
| CN101885107B CN101885107B (en) | 2011-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100688576A Expired - Fee Related CN101885107B (en) | 2009-05-15 | 2009-05-15 | Nickel-hydrogen battery post welding method |
Country Status (1)
| Country | Link |
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| CN (1) | CN101885107B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624392A (en) * | 2013-11-25 | 2014-03-12 | 中国兵器工业第五二研究所 | Nickel-metal hydride battery shell electron beam welding method |
| CN105643083A (en) * | 2014-11-10 | 2016-06-08 | 中国电子科技集团公司第十八研究所 | Welding method for pole lug and pole rod of high-power lithium ion battery |
| CN111451674A (en) * | 2020-03-31 | 2020-07-28 | 北京博清科技有限公司 | Welding method, welding device, storage medium, processor and welding system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6586134B2 (en) * | 2001-03-29 | 2003-07-01 | Wilson Greatbatch Ltd. | Electrode lead to case and header, laser/electron beam welding |
| JP2003282030A (en) * | 2002-03-25 | 2003-10-03 | Sanyo Electric Co Ltd | Manufacturing method of square type battery |
| CN101350403B (en) * | 2007-07-19 | 2012-05-09 | 上海空间电源研究所 | Apparatus for sealing pole post of hydrogen nickel accumulator |
-
2009
- 2009-05-15 CN CN2009100688576A patent/CN101885107B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624392A (en) * | 2013-11-25 | 2014-03-12 | 中国兵器工业第五二研究所 | Nickel-metal hydride battery shell electron beam welding method |
| CN103624392B (en) * | 2013-11-25 | 2016-04-27 | 北方材料科学与工程研究院有限公司 | Ni-H cell housing electro-beam welding method |
| CN105643083A (en) * | 2014-11-10 | 2016-06-08 | 中国电子科技集团公司第十八研究所 | Welding method for pole lug and pole rod of high-power lithium ion battery |
| CN105643083B (en) * | 2014-11-10 | 2019-05-07 | 中国电子科技集团公司第十八研究所 | The welding method of high power lithium ion cell tab and pole |
| CN111451674A (en) * | 2020-03-31 | 2020-07-28 | 北京博清科技有限公司 | Welding method, welding device, storage medium, processor and welding system |
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| Publication number | Publication date |
|---|---|
| CN101885107B (en) | 2011-11-30 |
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Granted publication date: 20111130 Termination date: 20170515 |